← Full glossary
PHA
Gluconolactone (PHA)
What it is
A polyhydroxy acid. Larger molecule than AHAs, so it exfoliates more slowly and rarely stings.
What it does
Gentle exfoliation, plus antioxidant activity. Good starter acid for sensitive or barrier-compromised skin.
Where you will find it
- Renewal SerumView kit →
Pairs well with
NiacinamideCentella
Advice
AHAs, BHA and PHA: the difference in plain English
Three families of chemical exfoliants. Different sizes, different jobs, different tolerances. Here is how to pick.
Read the article